Real time decoherence of Landau and Levitov quasi-particles in quantum Hall edge channels

Autor:	Ferraro, D., Roussel, B., Cabart, C., Thibierge, E., Fève, G., Grenier, C., Degiovanni, P.
Rok vydání:	2014
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Zdroj:	Phys. Rev. Lett. 113, 166403 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.113.166403
Popis:	Quantum Hall edge channels at integer filling factor provide a unique test-bench to understand decoherence and relaxation of single electronic excitations in a ballistic quantum conductor. In this Letter, we obtain a full visualization of the decoherence scenario of energy (Landau) and time (Levitov) resolved single electron excitations at filling factor $\nu=2$. We show that the Landau excitation exhibits a fast relaxation followed by spin-charge separation whereas the Levitov excitation only experiences spin-charge separation. We finally suggest to use Hong-Ou-Mandel type experiments to probe specific signatures of these different scenarios. Comment: 14 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1403.8047 Zobrazit plný text záznamu View this record from Arxiv